Dust-collector for vacuum cleaning systems.



G. SNIPEN.

DUST COLLECTOR FOR VACUUM CLEANING SYSTEMS.

APPLIOATION FILED NOV. 2, 1910.

Patented July 25,1911.

4 I v r 4 mfzrvroe Wem W M'r/vessas STATES UNITE GULBRAN smrnn, or srjnours, mrssomu.

Specification of Letters Patent.

DUST-COLLECTOR FOR VACUUM CLEANING SYSTEMS.

. Patented m 25, 1911.

Application filed November 2, 1910. Serial No. 590,879.

To all whom it may concern:

Be it known that I, Gunman Sn'rrsn, a citizen of the United States, residing at St.

Louis, Missouri, have, invented a certain newand useful Improvement in Dust-Collectors for Vacuum'Cleaning Systems, of which the following is a full, clear, and exact description, such as will enable others skilled int-he art to which it appe'rtains to make and use the same, reference being had to. the accompanying drawings, forming part of this specification, in which Figure 1 is anelevation of my improved dust collector for vacuum cleaning systems. Fig. 2 is a horizontal section taken through the center of my improved dust collector. Fi 3 is an enlarged section of one of the safety air inlet valves used in connection wit-h the collector.

My invention relates generallyto vacuum systems and more particularly to the means employed for separating and collecting the dust from the dust laden air as it passes through the pipes of the cleaning system.

The principal objects of my invention are first; to provide a simple lnex ensive receptacle in which is arranged a .pair of fabric sacks which separate the dust from the air drawn into. the receptacle: second; to provide means whereby the inner ends of the fabric sacks are yieldingly supported in order that said sacks may ive readily as a' result of the suction throug the rece tacle: third; to provide means for maintaining the sacks in a distended position thereby materially increasing the dust collecting surface: fourth; to arrange means with n the receptacle for preventing the fabric sacks from choking the air outlet openings in the ends of the receptacle, and fifth; to provide safety air inletva-lves which openv under atmospheric pressure when an excessive degree of vacuum or suction is roduced within the receptacle forming the ody of' the'collector.

' Referring by numerals to the accompanying drawings 1 designates a rece tacle preferably formed of sheet meta and constructed in mating halves, and" the meeting edges .of said mating halves are united-bya suitable removable loop or band 2. 3 designates an air Inlet pipe which 18 positioned adjacent the center of the receptacle and to which pipe the flexlble suction pipe 4 of the vacuum cleaning apparatus is connected.

are tubular outlet fittings 5 to which are connected flexible tubes 6-which unite with a single suction tube 7. leading to the air, pump or suction device utilized for creating a partial vacuum within the receptacle 1.

Arranged in the fittings 5 are air inlet valves 8 and arranged on the stems thereof outside said fittings are expansive coil springs 9. Nuts 10 are located on the ends ofthe valve stems outside the'springs and by adjusting these nuts the tension of the springs can be adjusted. Formed in the outer ends of the fittings 5 are air inlet apertures 11. 4

Fixed to the ends of the receptacle 1 and projecting toward. the center thereof are wire frames 12 which formguards to support the fabric sacks hereinafter described. The dust collecting and sepa-ratin sacks designated bythe numeral 13 are pre erably made of canvas or like closely woven fabric, and said sacks gradually taper from their open ends toward their. closed ends. 'The open endof each sack is attached to a ring 14 of wire or the like and said ring is detachably seated in an annular groove '15 formed in each of the mating halves of thereceptacle 1. Located within the closed end of each sack is a ring 16, and when the sacks are positioned in the ends of the receptacle 1 the closedends ofsaid sacks provided with the rings 16 occupy posit-ions adjacent the center of the receptacle, and the bodies of the sacks extend from said rings 16 toward the ends of' the receptacle over the wire frames 12, and from thence the bodies of said sacks extend toward the center of the receptacle and terminate at the rings 14. This 'ar rangement provides. a comparatively large area of dust collecting surface within a comparatively small receptacle. Loops 17 are attached to the closed ends of the" sacks 13 and connecting these loops 17 is a retractile coil spring 18.

collector and separator the air pumps or Arranged in the ends of the receptacle other suction device connected to. the 'pie 7 exhausts the air from the, receptac e 1 therebycreating a partial vacuum therein, and as a result suction is produced through the. ipe t. s The cleaning tools are connected to t is pipe 4 and the dustcollected by said tools is drawn with the air through the tube '4 and enters theflrecepta'cle through the inlet connection 3.; The air thus drawninto the receptacle l readily passes through the fabric sacks and passes from thence through the outlet connections 5 into the pipes 6, and from thence into and through the pipe 7 while the dust drawn into the receptacle is collected upon the outer surfaces of the fabric sacks. As hereinbefore stated these sacks are of such length as to necessitate their being doubled when located in the ends of the receptacle and this construction materially increases the dust separating and collecting surface. The wire frames 12 in the ends of the receptacle maintain the portions of the sacks in proper position in the ends of the receptacle and the retractile spring 18 yieldingly holds the closed ends of thesack in position at the center of the receptacle. Should excessive degree of vacuum be produced within the receptacle 1 the air inletvalves-S'will open under normal air pressure, thereby permitting air to enter the suction pipes 6 and relieve the excess of vacuum. To discharge the dust collected within the receptacle the hook or band 2 is removed to permit the mating parts of the receptacle to be separated after which the fabric sacks are removed by detaching;

the rings 14 from the annular grooves 15.

A dust collector of my improved construction is comparatively simple, presents a maximum amount of dust collecting surface in a receptacle of comparatively small size, and said receptacle can be readily set up for use and quickly taken apart for the purpose of removing the collected dust.

It will be readily understood that minor changes inthe form, size and construction of the various parts of my improved dust collector may be made and substituted for those herein shown and described without departing from the spirit of my invention.

I claim:'

1. In a dust collector for vacuum cleaning systems, a receptacle formed in mating parts, detachable means for uniting the meeting edges of said parts, an inlet tube connected to the central portion of the receptacle, outlet tubes at the outer ends of the mating parts, of the receptacle, fabric sacks arranged in each part of the receptacle, the

body portions of which sacks are doubled wit-h the closed ends of the sacks positioned adjacent the center of the' receptacle, a retractile coil spring attached to and formin a yielding connection between the closed ends of the sacks, and skeleton frames in the ends of the receptacle beneath the. doubled two parts of the receptacle, an inlet tube connected to the central portion of the receptacle, outlet tubes at the ends of the receptacle, a fabric sack arranged in each part of the rece tacle, a ring around the mouth of each fa bric sack, which rin are seated in grooves formed on the interior of the parts of the receptacle, the body portions of which fabric sacks are doubled with the closed ends of said sacks positioned adjacent the center of the receptacle, and a retractile coil spring attached to and formin a yielding connection between the close ends of said sacks.

3. In a dust collector for vacuum cleaning systems, a cylindrical receptacle, an inlet tube connected to the receptacle adjacent its center, outlet tubes at the ends of the re-' ceptacle, there eing annular grooves formed on the interio of said receptacle adj acent the center thereof, rings seated in said annular grooves, fabric sacks arranged within the receptacle with their edges attached to the rings, and the inner ends of said sacks positioned adjacent the center of the receptacle and a retractile spring conl necting the closed ends of said sacks.

4. In a dust collector for vacuum cleaning,

systems, the combination with a receptacle having air inlet and outlet connections, of a pair of fabric sacks removably positioned in the ends of the receptacle, the body portions of which sacks are doubled with the closed ends of said sacks positioned adjacent the center of the receptacle, said sacks being arranged between the inlet and outlet openings of the receptacle, and a retractile coll spring connected to and forming a yielding connection between the closed ends of said sacks.

In testimony whereof I hereunto aflix my signature in the resence of two witnesses, this 25th day of Setober, 1910.

- GULBRAN SNIPEN.

Witnesses M. P. SMITH, ALMA GEBHART. 

